The AirTAC GR60025LJNTK AirTAC Air Pressure Regulator NPT1 Low-Pressure is a genuine G-series air pressure regulator. It holds a stable downstream pressure over the range 0.05 - 0.4 MPa (7 - 58 psi) with PT1" ports, ordered without a gauge. A regulator does not filter the air — put a GF filter upstream, or use a GFR filter regulator, when water and particulate must also be removed.
The GR60025LJNTK is an AirTAC GR-series air pressure regulator: it does one job, holding a stable downstream pressure from a compressed-air supply. This is the size-600 low-pressure (L) configuration in the largest GR frame, with 1 in NPT ports, so it suits lines that must run at reduced setpoints rather than full line pressure. The adjustment range goes up to 0.4 MPa, maximum inlet pressure is 1.0 MPa (145 psi), and the operating temperature range is -20 to 70 C, wider than the rest of the G family. The K in the code means a reverse (check) valve is fitted, and N means no gauge is supplied, so add a gauge separately if you want a visible setpoint. The J code means no mounting bracket is included; GR units are also panel-mountable.
This is a genuine AirTAC part. The GR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, in standard and low-pressure types, with optional gauges, brackets and reverse valves, and PT, G or NPT threads to order. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GR60025LJNTK AirTAC Air Pressure Regulator NPT1 Low-Pressure |
|---|---|
| Series | GR600 pressure regulator |
| Port size | PT1" (NPT thread) |
| Regulating range | 0.05 - 0.4 MPa (7 - 58 psi) |
| Pressure type | Low-pressure type |
| Bracket | Supplied without bracket |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -20 to +70 °C |
| Pressure gauge | Not fitted |
| Reflux valve | Fitted (reverse flow permitted) |
| Mounting | Panel mounting; optional fixing bracket |
Specifications follow the official AirTAC G-series air-preparation data. Note the GR temperature range is -20 to +70 °C, wider than the other G-series units. A regulator has no bowl and no filter element, so there is no filtering grade. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GR600 | G-series pressure regulator, 600 body — sets the port range. |
|---|---|
| 25 | Port size PT1". This body offers 20 = PT3/4", 25 = PT1". |
| L | Low-pressure type — 0.05 - 0.4 MPa (7 - 58 psi). Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| N | No pressure gauge (N). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
Field order is size, port, type, bracket, gauge, gauge shape, scale, thread, reflux — a blank position takes the default. Example: GR300-08LNK is a 300 body, PT1/4", low-pressure type, no gauge, with reflux valve.
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom rather than from a single rated figure.
| This model | GR600 · PT1" · 0.05 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR400 |
| Line order | Filter first, then regulator, then lubricator |
On a machining or assembly fixture where clamps must close gently and hold at a reduced setpoint, this low-pressure regulator sets and holds the clamp circuit pressure below 0.4 MPa, with the fitted check valve helping hold the setting against backflow.
Wide fabric, film or packaging machines often run actuators and jets at reduced pressure. A size-600 regulator with 1 in NPT ports sits on the main drop and holds a steady low setpoint for the whole line.
In a plant room where a branch of the compressed-air distribution must be trimmed to a lower, stable pressure than the header, this panel-mountable GR600 regulator provides the adjustment point, with a separately ordered gauge for setpoint visibility.
Start with the port step: size 600 with 1 in ports is the top of the GR range, so match it to your line size and required flow rather than upsizing on guesswork. This is the low-pressure (L) type, correct where the working setpoint stays at or below 0.4 MPa; if your process needs higher regulation, the standard GR type covers up to 0.9 MPa. The N code means no gauge is fitted: order a gauge (square embedded or external round, with MPa, psi or bar scale) if operators need to read the setpoint. Thread is NPT here; PT is the AirTAC standard and G (BSPP) is also available to order. The J code omits the mounting bracket, and the K code adds a reverse (check) valve, useful where backflow protection is wanted. Flow for this family is published as curves, not a single rating, so send us your application details and we will confirm sizing against the datasheet before you order.
Quick checklist
The reflux valve lets air flow back through the regulator, which is useful when downstream volume must vent quickly. A regulator does not remove water or particulate; that is the filter's job.
AirTAC publishes GR flow as curves, not as a single rated figure, so we do not quote a flow number. Tell us your inlet pressure, setpoint and expected air demand and we will confirm the sizing from the datasheet on request before you order.
N means no pressure gauge is supplied, so order a gauge separately (square embedded or external round, with MPa, psi or bar scale) if you need to read the setpoint. J means no mounting bracket is included; GR regulators are also panel-mountable. The K in the code confirms a reverse (check) valve is fitted.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.